This is an automatically translated description

From the publisher:

Who among us has not had to meet a friend at least once in our life who would make our life unbearable? Good friends are a determining factor in our well-being, and the healing power of friendship has been confirmed by numerous studies. And yet, this is not always the case. This book exposes the risks and harms that dangerous friendships can pose to us. In many cases, they are very difficult to detect and expose because people do not carry posters that say: "Betrayal is the meaning of my life."